制冷学报2024，Vol.45Issue(3)：63-71,9.DOI:10.3969/j.issn.0253-4339.2024.03.063
CO2/R1233zd(E)混合工质回热热泵系统性能优化分析
Performance Optimization and Analyses on Recuperative Heat Pump System Using CO2/R1233zd(E)
摘要
Abstract
Air-source heat pumps,as a new,energy-saving,and environmentally friendly technology,are widely applied in various heating applications,yet their reliable operational efficiency at low ambient temperatures is a concern.In this study,a simple,low-cost,and reliable heat pump system is constructed using safety and environmentally friendly binary refrigerant CO2/R1233zd(E),and the system performances such as the coefficient of performance(COP),volumetric heating capacity,suction pressure,and exhaust pressure are obtained through optimization analyses at ambient temperatures from-30℃ to-10℃.By comparing the vapor-injection heat pump system and cascade heat pump system,it was deduced that a recuperative heat pump system using a binary refrigerant can maintain high efficiency at low ambient temperatures.At ambient temperatures ranging from-30℃ to-10℃,the COP of the recuperative heat pump system decreases by 9.8％to 20.6％,whereas the volumetric heating capacity increases by 3.5％to 56.1％compared to the R410A vapor-injection heat pump system.Moreover,the compressor pressure ratio and its variation with ambient temperature are lower than other heat pump systems.Owing to the simple structure of the recuperative system and the adoption of the safe and environmentally friendly binary refrigerant CO2/R1233zd(E),the solution proposed in this study has unique advantages in heat pump applications in regions with low ambient temperatures.关键词
空气源热泵/回热循环/混合制冷剂/优化分析Key words
air source heat pump/heat regenerative cycle/mixed refrigerant/optimization analyses分类
通用工业技术引用本文复制引用
邹德鑫,赵朕,杨凯寅,王勤,陈光明..CO2/R1233zd(E)混合工质回热热泵系统性能优化分析[J].制冷学报,2024,45(3):63-71,9.基金项目
国家自然科学基金(51976179)资助项目.(The project was supported by the National Natural Science Foundation of China(No.51976179).) （51976179）
